Why a 'hologram revolution' could be on the way


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Crucially, there's a device that knows where everyone in the room is, creating a tailored virtual experience. The hologram shows also come with sensory technology, allowing visitors to smell the flowers and trees.

 

The Jaws of Life on the job.

 

The Jaws of Life on the job.

Breaking my heart watching them cut up that Tacoma.

 

Another can-opener rescue.

 

Could be a future for energy storage.
https://www.youtube.com/shorts/FftChWEXe5w

 

Could be a future for energy storage.
https://www.youtube.com/shorts/FftChWEXe5w

Calling it a battery is a media hype misnomer. It doesn't convert thermal energy to another form of energy, it just stores energy as heat and gives that energy back as heat at some, likely low, efficiency.

https://www.treehugger.com/viral-sand-battery-isnt-what-it-seems-5547707

"It is true that we have been trying to avoid the word battery, since technically speaking it is not what we have. Anyhow, the word caught fire, and was a big part of the media success, and it probably was McGrath’s invention. Of course if we were to generate electricity from the heat, it would at least act like a battery does: taking in electricity and giving back electricity."
...
"The high temperature of our storage would allow some reasonable efficiency for the electricity generation, but it still is economically challenging, as the efficiency would be in the order of 20%," says Ylönen.

Sorry media droid, it is a serious stretch to call it a form of battery.

This is closer to a 'real' thermal energy storage battery.

 

I tried establishing a business selling paper airplanes in the 3rd grade. It was an important lesson in supply and demand. 30 years later the lesson is reversed and thrown in my face.

 

1 min and 26 sec the fix for a non-charging apple pencil with zero battery. The trick is to get it back on bluetooth, I let this set for a year or so. It’s what broke it.


The youtube fix.

kv

 

 

 

https://en.wikipedia.org/wiki/Roadog

Roadog is a motorcycle built by engineer and motorcycle enthusiast Wild Bill Gelbke between 1962 and 1965. A total of two were built. Gelbke, who had attended engineering school in Wisconsin and at University of Southern California, had worked for McDonnell Douglas and also owned two motorcycle shops in Chicago and Hammond, Indiana. He wanted to create a motorcycle that was dependable and was able to cruise at highway speeds comfortably for long periods.[2] Gelbe constructed and welded the frame himself using 4130 chrome-molybdenum tubing, and equipped the machine with a Chevrolet 153 engine and GM powerglide transmission.[1] The shaft drive was constructed from a Chevrolet 1-ton truck differential that was cut in half.[1] The complete bike is 17 feet (520 cm) long and weighs 3,280 pounds (1,490 kg).[1] Its great size and weight make the bike impossible for most people to steer until it is moving at a speed of at least 15 miles per hour (24 km/h), and when at rest it is held up by hydraulic rams that are deployed by the driver.

 

View attachment 306223
https://en.wikipedia.org/wiki/Roadog

I saw that video and didn't understand what was so special about the thing. It's a contraption and a hazardous one at that. Impractical and ugly. Why is it more noteworthy than this?



Or this?



Apparently the designer had an interesting history with an interesting ending, but he wasn't famous. It wasn't like this was the pet project of Ferdinand Porsche or anything, but that's how the video seemed to spin it. It might as well have been made by my neighbor's uncle Cletus.

 

I saw that video and didn't understand what was so special about the thing. It's a contraption and a hazardous one at that. Impractical and ugly. Why is it more noteworthy than this?
...

if you were into bikes during the 70's that photo was in every MC club and repair shop in the country. We all knew that thing was a death-trap and the guy the built and rode it was a brother biker of the highest order.

 

if you were into bikes during the 70's that photo was in every MC club and repair shop in the country. We all knew that thing was a death-trap and the guy the built and rode it was a brother biker of the highest order.

Ok, that's the context I was missing. Makes more sense now. Thanks.

 

 

That bike, THOSE bikes, geez. Gotta take six weeks just to turn it around.

 

All the cool kids these days are drone fishing.

Amazing how fast things change

 

https://www.youtube.com/shorts/ZkutD55fs4A

 

 

Almost three years since the last post; I was thinking of starting a "Something Cool" thread but decided to look to see if someone else had done so before. Turned out this thread was started three years ago. I know I'm resurrecting an old thread but I saw this and thought it was just an absolutely cool build.

Has anyone used electrostatic air movement instead of ducted fans for propulsion like the ionic breeze machines?